SUITABILITY: SMARTPLY OSB3 - ZERO ADDED FORMALDEHYDE

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Richard Atkinson
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SMARTPLY OSB3 is a highly engineered, moisture resistant load-bearing panel designed for use in humid conditions and is therefore ideal for many structural and non-structural applications in both

1 SMARTPLY OSB3 is a highly engineered, moisture resistant load-bearing panel designed for use in humid conditions and is therefore ideal for many structural and non-structural applications in both internal and protected external environments. Manufactured in accordance with EN 300 performance standard, it is the perfect choice for roofing, flooring, wall sheathing, site hoarding and many other applications where strength and moisture resistance are paramount.

2 SUITABILITY: EN 300 classifies OSB panels by their properties which relate to their intended use. SMARTPLY OSB3 is classified as a load-bearing panel for use in humid conditions. Structures comprising SMARTPLY OSB3 should be assigned to service class 1 or 2 as defined in EN (Eurocode 5). According to this standard, SMARTPLY OSB3 is suitable for use in both of these service classes. Moisture conditions can affect the performance of woodbased panels. Therefore, it is important that the correct type of OSB is specified for a particular service class. Always check current regulations specific to the country of use. As well as conditions in service, consideration must also be given to the construction phase where high levels of moisture or humidity often exist. Consideration should also be given to end-use applications that may be at risk of short-term wetting, such as from burst water pipes or leaking appliances. In such conditions SMARTPLY strongly recommends the use of OSB3. According to EN 300, SMARTPLY OSB3 is suitable for use in Use classes 1 and 2 of EN 335. Furthermore, SMARTPLY S innovative OSB3 SITEPROTECT (coated hoarding panel) is suitable for use in Use class 3 of EN 335. SPECIFICATION AND DESIGN As design values can vary between manufacturers, it is important to ensure that the SMARTPLY OSB3 panels specified by the designer are those used on site. All SMARTPLY panels are clearly marked with the following information: a Major axis (length of panel, direction of laying arrows) b Production identification number c Product Certification mark (e.g. BBA, IAB) d CE marking i. Manufacturer s name / Logo (SMARTPLY) ii. Notified body identification number iii. Quality standard (EN 300, EN 13986) iv. Panel type (e.g. OSB3) v. Thickness (e.g. 18mm) vi. Formaldehyde class (e.g. E1) e Additional marking for ease of reference (e.g. 2+ structural) f FSC certification Note: Markings may vary depending on product type. SMARTPLY OSB3 - ZERO ADDED FORMALDEHYDE SMARTPLY OSB3 is manufactured using advanced resin technology that results in a high performance, zero added formaldehyde panel that scores highly in The Green Guide to Specification (see below). This specialist resin formulation provides a supreme bond with the wood strands as it has a reaction with the wood itself, when put under intense heat, creating a chemical weld. This is a different and superior type of bond to the mechanical weld that formaldehyde-based products exhibit. Depth of penetration is well beyond the minimum 0.3 mm needed for a wood resin to provide adequate adhesive strength. This extra resin penetration also greatly improves the wood s resistance to thickness swell. SMARTPLY OSB3 AND THE GREEN GUIDE TO SPECIFICATION The Green Guide to Specification provides designers and specifiers with robust information to assist decision-making by translating numerical life cycle assessment data into simple A+ to E scale of environmental ratings, enabling specifiers to make the best environmental choices when selecting construction materials and components. Specifiers using The Green Guide will be aware that OSB3, of which SMARTPLY is a market leading supplier, consistently scores well for overall environmental impact. Numerous examples are given in the guide where OSB3 contributes to an overall summary rating for elements of A and A+ and as a result consistently score better than those same elements in which plywood is specified. SMARTPLY OSB3 has been independently assessed by NSAI for compliance to EN 13986:2004 and as a requirement by the Building Research Establishment s Environmental Assessment Method (BREEAM) under section Hea 02 Indoor Air Quality can contribute towards a BREEAM rating / credit. A Guide published by Greenpeace in August 2008, titled: Setting a New Standard: Alternatives to unsustainable plywood in the UK construction industry, has cited FSC certified Oriented Strand Board (OSB), of which SMARTPLY is a market leading supplier, as one of the most environmentally sound alternatives to non-fsc certified plywood for all manner of building projects.

3 TABLE 1: Mechanical and physical properties of SMARTPLY OSB3 Mechanical properties Test method Unit Requirement Panel thickness - mm Mean density tolerance EN 323 % +/- 15 +/- 15 +/- 15 Bending strength (MOR) - major axis Bending strength (MOR) - minor axis Modulus of elasticity (MOE) - major axis Modulus of elasticity (MOE) - minor axis EN 310 N/mm EN 310 N/mm EN 310 N/mm EN 310 N/mm Internal bond EN 319 N/mm Internal bond after boil test EN N/mm Swelling in thickness 24h EN 317 % Formaldehyde release - perforator value Moisture content - ex works EN 120 mg/100g 8.0 (E1) 8.0 (E1) 8.0 (E1) EN 322 % General tolerances Test method Unit Requirement Length EN mm +/ / /- 3.0 Width EN mm +/ / /- 3.0 Thickness (un-sanded) EN mm +/ / /- 0.8 Thickness (sanded) EN mm +/ / /- 0.3 Edge straightness EN mm/m +/ / /- 1.5 Squareness EN mm/m Building physics calculation values Water vapour resistance factor (μ-value) Test method / Reference standard EN EN Reaction to fire (BS) BS AD B 2006 Reaction to fire (Euroclass) EN EN 1398 Unit Calculation value (wet cup) / 240 (dry cup) - Class 3 - ( 9 mm) D-s2,d0 (excluding floorings) ( 9 mm) DFL-s1 (floorings) Charring rate (β0,ρ,t) EN mm/min ( 20 mm) 0.78 Thermal conductivity (y ) EN W/(m.K) 0.13 Airborne sound insulation EN db R = 13 x lg (m A ) + 14 : (1-3 khz at m A >5 kg/m 2 ) Sound absorption coefficients Dimensional change at 1% change in panel moisture content EN (frequency range 250 Hz to 500 Hz) 0.25 (frequency range 1000 Hz to 2000 Hz) EN 318 DD CEN/TS % Length 0.02 Width 0.03 Thickness 0.5

4 STRUCTURAL DESIGN OF SMARTPLY OSB3 BS provides deemed to satisfy tables and other structural design guidance to enable supervisory/technical staff of building companies to determine the thickness, type and any limitations of OSB components for floors and roofs of dwellings of limited size. A structural engineer should be employed where the building falls outside the scope of this part of BS Further technical guidance is provided in the relevant SMARTPLY product technical data sheets. Characteristic values for strength and stiffness of OSB3 are given in Table 2 (below). These can be used for limit state designs to EN (Eurocode 5). For permissible stress designs to BS 5268, conversion factors are given in BS Property Designation Thickness range (mm) Characteristic Strength Properties (N/mm 2 ) Bending strength Parallel to span Perpendicular to span Tensile strength Parallel to span Perpendicular to span Compressive strength Parallel to span Perpendicular to span Shear strength Panel (as a racking panel) Planar (as in floor decking) Stiffness Properties (N/mm 2 ) Modulus of elasticity Mean, in bending parallel to span Mean, in bending perpendicular to span Mean, in tension and compression parallel to span Mean, in tension and compression perpendicular to span Shear modulus Panel (as in a racking panel) Planar (as in floor decking) to convert these characteristic strength and stiffness values into grade strength and stiffness values. The properties listed include bending, tension, compression and shear. When OSB3 is used structurally under service class 1 conditions, the characteristic values of the mechanical properties given in Table 2 shall apply. To convert these values into design values they should be modified according to EN (Eurocode 5) for duration of load (kmod, kdef). When OSB3 is used structurally under service class 2 conditions, the characteristic values of the mechanical properties given in Table 2 shall apply. To convert these values into design values they should be modified according to EN (Eurocode 5) for both service class and duration of load (kmod, kdef). TABLE 2: Characteristic values for strength and stiffness of OSB3: Taken from BS EN ƒm,0,k ƒm,90,k ƒt,0,k ƒt,90,k ƒc,0,k ƒc,90,k ƒv,k ƒv,r,k E0,mean E90,mean Ect,0,mean Ect,90,mean >6-10 >10 18 >18-25 Notes: 0 = in the direction of the major axis. 90 = in the direction of the minor axis. These properties relate to an equilibrium moisture content of the test pieces conditioned at a temperature of 20 C and a relative humidity of 65%. The 5th percentile characteristic values for stiffness should be taken as 0.85 x the mean values given in the table. Gv,mean Gr,mean

QUALITY & ENVIRONMENTAL CERTIFICATION SMARTPLY OSB is manufactured in accordance with the requirements of EN 300: Oriented Strand Boards (OSB) definitions, classification and specifications.

5 QUALITY & ENVIRONMENTAL CERTIFICATION SMARTPLY OSB is manufactured in accordance with the requirements of EN 300: Oriented Strand Boards (OSB) definitions, classification and specifications. SMARTPLY OSB is CE marked in accordance with the harmonised standard EN 13986: Wood-based panels for use in construction characteristics, evaluation of conformity and marking. This standard is a technical specification for wood-based panels which implements the provisions of the Construction Products Regulation (CPR). In addition to the CE mark, SMARTPLY OSB panels are marked 2+ Structural for ease of reference. SMARTPLY OSB3 is certified by the British Board of Agrément (BBA) and the Irish Agrément Board (IAB). Due to this certification it is permitted for structural use by NHBC (UK) and Homebond (Ireland) when used in accordance with the requirements of the Building Regulations in the country of use. Other quality certification includes SINTEF (Norway) and KOMO (Netherlands). SMARTPLY has achieved I.S. EN ISO 9001, the internationally recognised quality management system which is certified by the National Standards Authority of Ireland (NSAI). SMARTPLY has Forest Stewardship Council (FSC) Chain of Custody certification for its manufacturing, processing, sales and distribution processes. SMARTPLY operates under an Integrated Pollution Prevention Control (IPPC) licence, which is monitored by the Environmental Protection Agency (EPA) in Ireland. All SMARTPLY OSB3 products are manufactured using formaldehyde-free resin. V 05/17

SERVICE For further information and/or technical advice please contact your local SMARTPLY Sales Representative or SMARTPLY Technical Support Personnel through any of our European offices.

please check on www.mdfosb.com that you have the latest version.

6 SERVICE For further information and/or technical advice please contact your local SMARTPLY Sales Representative or SMARTPLY Technical Support Personnel through any of our European offices. UK: +44 (0) Ireland: Germany: France: Netherlands: Belgium: As we continually update our technical datasheets, please check on that you have the latest version. This technical data sheet is provided for information purposes only and no liability or responsibility of any kind is accepted by SMARTPLY EUROPE DAC or their representatives. SMARTPLY EUROPE DAC have used reasonable efforts to verify the accuracy of any advise, recommendation or information. SMARTPLY EUROPE DAC reserves the right to alteration of its products, production information and range without notice. IMPORTANT NOTES The recommendations provided in this technical data sheet for the correct use of SMARTPLY OSB3 are specifically designed to ensure longevity and performance of this quality product in service. It is therefore essential that these recommendations are strictly followed. The product is designed to be installed by a competent general builder or contractor, experienced with this type of product, in strict accordance with the technical guidance provided in the relevant SMARTPLY product technical data sheets. SMARTPLY EUROPE DAC cannot be held responsible for damages arising from non-adherence to these recommendations, or product failures resulting from inadequate structural design or misuse of this product. In order to provide comprehensive guidance for the correct use of SMARTPLY OSB3, this technical datasheet makes reference to relevant BS and EN standards. SMARTPLY EUROPE DAC cannot be held responsible for claims arising from the use of any information that has been extracted from such sources.

Other quality certification includes SINTEF (Norway) and SmartPly OSB is manufactured in accordance with the

Other quality certification includes SINTEF (Norway) and SmartPly OSB is manufactured in accordance with the SmartPly OSB 3 Data Sheet 22nd April 2013 copy:smartply OSB 2 10th Jan 8/5/13 14:25 Page 3 SMARTPLY SmartPly OSB3 SmartPly OSB3 is a highly engineered, moisture resistant load-bearing panel designed for